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595 

WWUS20 KWNS 031959

SEL6

SPC WW 031959

KYZ000-040100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 326

NWS STORM PREDICTION CENTER NORMAN OK

300 PM CDT WED JUN 3 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL KENTUCKY



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 300 PM UNTIL

800 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 85 MILES EAST

NORTHEAST OF BOWLING GREEN KENTUCKY TO 45 MILES NORTH NORTHWEST

OF FORT CAMPBELL KENTUCKY.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 325...



DISCUSSION...THE THREAT FOR DAMAGING WINDS AND LARGE HAIL WILL BE

FOCUSED IN A SMALL AREA OF WRN/CENTRAL KY THIS AFTERNOON.  THE

SOMEWHAT STRONGER DEEP LAYER FLOW/SHEAR IS CONFINED TO AREAS CLOSER

TO THE OH RIVER AND THE SWD MOVING COLD FRONT...WHILE AN APPROACHING

CONVECTIVE SYSTEM FROM THE W AND A REMNANT OUTFLOW BOUNDARY ACROSS

SE/CENTRAL KY LIMIT THE WRN AND ERN EXTENTS OF THE SEVERE

THREAT...RESPECTIVELY.  THE COMBINATION OF EFFECTIVE BULK SHEAR OF

30-35 KT AND MODERATE INSTABILITY WILL SUPPORT A FEW ORGANIZED

CLUSTERS...AND POTENTIALLY SUPERCELLS CLOSER TO THE COLD

FRONT...WITH THE POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS.  THE

SEVERE THREAT IS EXPECTED TO DIMINISH TOWARD SUNSET AS A RESULT OF

CONVECTIVE OVERTURNING AND THE LOSS OF DAYTIME HEATING.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27020.





...THOMPSON

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